Analog Optical Spatial Differentiators Based on Dielectric Metasurfaces
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Optical Materials"
DOI: 10.1002/adom.201901523
Abstract: Analog spatial differentiator is an important optical computational device that can be potentially used in the field of highâspeed edge detection and optical image processing. In the current stage, a general method is still required… read more here.
Keywords: spatial differentiators; differentiators based; analog optical; based dielectric ... See more keywords
Nonlocal and Nonlinear Surface Plasmon Polaritons and Optical Spatial Solitons Induced by the Thermocapillary Effect.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.120.243904
Abstract: We study the propagation of surface plasmon polaritons (SPPs) on a metal surface which hosts a thin film of a liquid dielectric. The Ohmic losses that are inherently present due to the coupling of SPPs… read more here.
Keywords: surface; plasmon polaritons; surface plasmon; thermocapillary effect ... See more keywords
Optical spatial differentiation with suspended subwavelength gratings.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.416801
Abstract: We investigate first- and second-order spatial differentiation of an optical beam transverse profile using guided-mode resonances in thin, suspended subwavelength gratings. Highly reflective one-dimensional gratings are patterned on freestanding 200 nm-thick silicon nitride membranes using… read more here.
Keywords: differentiation; spatial differentiation; subwavelength gratings; beam ... See more keywords
All-optical spatial terahertz modulator with surface-textured and passivated silicon.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.419299
Abstract: For a Si-based all-optical spatial terahertz modulator (STM), an enhanced modulation efficiency under low illumination density would be of great significance to exploit the competence of THz technology in real-world applications. We presented here an… read more here.
Keywords: spatial terahertz; modulation efficiency; modulation; terahertz modulator ... See more keywords
Optical spatial filtering with plasmonic directional image sensors.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.460556
Abstract: Photonics provides a promising approach for image processing by spatial filtering, with the advantage of faster speeds and lower power consumption compared to electronic digital solutions. However, traditional optical spatial filters suffer from bulky form… read more here.
Keywords: optical spatial; image sensors; spatial filtering; plasmonic directional ... See more keywords
Optical-spatial-summing-based NOMA with fine-grained power allocation for VLC-enabled IoT applications.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.403914
Abstract: In this Letter, we propose and demonstrate a practical optical-spatial-summing-based non-orthogonal multiple access (OSS-NOMA) technique for visible light communication (VLC) systems. This technique is innovative in adopting OSS in that the transmitter of OSS-NOMA VLC… read more here.
Keywords: spatial summing; power; vlc; oss noma ... See more keywords